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A077996 as a simple table

n a(n)
0 1
1 1
2 3
3 9
4 23
5 61
6 163
7 433
8 1151
9 3061
10 8139
11 21641
12 57543
13 153005
14 406835
15 1081761
16 2876367
17 7648165
18 20336219
19 54073337
20 143779223
21 382304221
22 1016534339
23 2702931345
24 7187005471
25 19110010965
26 50812890091
27 135109802089
28 359252516199
29 955240614669

[1,1,3,9,23,61,163,433,1151,3061,8139,21641,57543,
 153005,406835,1081761,2876367,7648165,20336219,
 54073337,143779223,382304221,1016534339,
 2702931345,7187005471,19110010965,50812890091,
 135109802089,359252516199,955240614669]

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Last modified September 27 10:35 EDT 2020. Contains 337380 sequences. (Running on oeis4.)